[First Look] DFI 680i LT NF-680i LT SLI (56K Warning~~~)

[virtualrain]

I can tell its throttling multiple ways. The temps will drop 5-7c really quick than go back up in constant cycles.

CPU-Z shows the reduced multi kicking in. Than going back. RM Clock monitoring shows both the clock bumping down to a 6x multi and the VID getting bumped down. Its typical TM2 throttling.

With Coretemp 94 temps never going over 65c ~61-63 on on all 4 cores (@ 1.4 Bios, Strong drive, around 1.32 DMM measured actual load), if I remove my fan from the VRM heatsink for more than 10 seconds it will go into a constant throttle cycle (6x multi for a second 9x for a second etc..)

Even putting the fan back, it will constantly throttle under full load.

Very odd problem, I'm assuming that the PWM temps are being read somewhere and are tied into processor throttling.

I can stop it from happening with RM clock by disabling TM1 and 2 throttling.

My testing is on XP. Btw.

Something doesn't seem right here... This is the first this has been mentioned (you and vincey) and lots of people have been overclocking. If this was a design/feature, I'm sure many more people would have been running into this by now. I've personally never witnessed this issue with my board and I was running some high clocks and Vcore before I decided to put a fan on the PWM area. My initial throttling was Vista's power management at work. If you're certain you've disabled all software speed-step type of stuff, you should consider logging this over on the DFI Club Forums to ensure this is expected behavior.